Defeat Hornsent and Messmer:

You can either help Leda defeat Hornsent in Shadow Keep or summon Hornsent to help you defeat Messmer the Impaler. The outcome of these interactions is important for triggering the next phase of the quest.
Turn Leda Against Ansbach:

You will need to turn Leda against Ansbach to Elden Ring Items continue the quest line. This can be done by either helping her defeat Hornsent or involving Hornsent in your battle with Messmer.
Break the Great Rune:

To proceed, you must break the Great Rune. This is done by traveling to the Main Gate of Shadow Keep, located in north Scadu Altus.
Give the Secret Rite Scroll to Ansbach:

Go to the Shadow Keep Specimen Storehouse, and locate Ansbach on the First Floor. Give him the Secret Rite Scroll, which will trigger a key part of the quest line.
Before handing him the scroll, it’s recommended to exhaust all of cheap Elden Ring Items Freyja's dialogue at the Seventh Floor site of grace in the storehouse, and then inform Ansbach about Freyja's decision.
This will allow you to receive the Letter For Freyja key item from Ansbach and relay messages between the two characters until their dialogues are exhausted.